If you type the possessive "its" on an iPhone you will see it converted to the possessive contraction "it's" unless you take the additional action of canceling the replacement. The iPhone isn't intelligently considering grammatical context, it's just dumbly replacing it every time you try and type it, and Apple doesn't trust you to disable its auto-correct feature or believe you have the intelligence to correctly handle adjusting the individual replacements it does.

That is the epitome of Apple's arrogant user-interaction philosophy, and why I hate them.

^Quinxy